Improvement in machines for making metallic moldings



H. ADLER & 'c. ROGERS.

Improvement in Machines for Making Metallic Moldings. No. 131,239. Patented se .10,1-s72.

IN i Ill! M PiMN'HT/IOGRIPI/IC mm: mnaw/Es M00555) 7 U NITED STATES PATENT QFFICE IIENRY ADLEB AND:CHARLES ROGERS, OF PITTSBURG, PENNSYLVANIA;

SAID'ROGERS ASSIGNS HIS RIGHT TO SAID ADLER.

IMPROVEMENT IN MACHINES FOR MAKING METALLIC MOLDI NGS.

Specification forming part of Letters Patent No. 131,239, dated September 10, 1872.

To all whom it may concern.-

Be it known that we, HENRY ADLER and CHARLES ROGERS, both of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a certain new and useful Improvement in Brakes for Bending Sheet Metal and forming it into cornices and ornamental work; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon.

To enable others skilled in the art to make and use our invention, we will proceed to describe its construction and operation.

In the accompanying drawing, which forms part of our specification, Figure 1 is a perspective view of our improvement in brake or machine for bending sheet metal for cornices or other ornamental work. Figs. 2, 3, and 4 are transverse sections of the upper portion of the same. Fig. 5 represents a portion of a cornice formed by our improved brake.

The hollow triquetrous bar B is constructed of cast-iron and secured to the cast-iron end pieces A by means of bolts. To the ends of the hollow triquetrous bar 0 are attached camyokes E, which move in recesses U in the end pieces A. The cams D, which are used in combination with the yokes B, have their axes 2 in the end pieces A and to the outer ends of the axes are attached levers F for the purpose of rotating the cams D, and thereby elevate the bar 0 to admit between it and the bar B the sheet which is to be bent. The hollow triquetrous bar G is pivoted or hinged to the end pieces A. at b. On the axis of this bar G are arranged levers H and I; and to the letage of the adjustable weights M on the levers K will be very apparent when it is understood that the pieces of sheet metal vary greatly in weight on account of the various sizes used in the construction of cornice and other ornamental work for buildings, some pieces being very small and others very large; and as it is often necessary to bend five hundred of the large sheets into a given form, the operator can be relieved from lifting the weight of the sheets by simply adjusting the weights M on the levers K. The weight of the bar Gis also compensated for through the medium of the weights M on the levers K, which, combined with the levers L, I, and H, as hereinbefore described, will hold the bar G down in position, as represented in Figs. 1,2, and 4. The bar is elevated, as shown in Fig. 8, by the operator lifting the levers H. To the end pieces A at s is hinged a former, B. By thus hinging the former R the operator can, with great facility, adjust it with relation to the bars Bv and O, as shown in Fig. 4, for giving the desired curve to the piece or pieces of sheet metal held between the bars B and G. On the upright pieces 0 are arranged adjustable stops N, which are held in a fixed position by setscrews P. The stops N are used for the purpose of preventing the levers K, with their weights M, from falling below the point desired.

In the operation of bending the sheet metal for the purposes hereinbefore stated, the operator, through the medium of the levers F and cams D, lifts the bar 0 up off the bar B, and places between them the sheet metal, as shown at a. The bar 0 is then lowered down upon the sheet, which isfirmly held between the bars 0 and B during the operation of bendin g it, through the medium of the bar G, which is raised, as indicated by the dotted lines 0. The sheet a, being bent at c, as shown in Fi 3, may be curved by raising up the former R, and then bending the sheet over the round T,

as indicated in Fig. 4. The former R is then i ranged, and operating, with relation to each other, substantially as herein described, and for the purpose set forth.

2. The hinged former R, in combination with the hollow triquetrous bars B, G, and G, substantially as herein described, and for the purpose set forth.

HENRY ADLER. [L. 8.] CHAS. ROGERS. [L. s.]

Witnesses:

S. BULFoRn, FRANCIS L. CLARK. 

